<div class="center-block text-center">
    <?php if ($question->part == '1') { ?>
    <?php if ($reference) { ?>
    <?php echo $this->tag->image(array($reference->url, 'class' => 'img-responsive question-img')); ?>
    <?php } ?>
    <?php if ($audio) { ?>
    <button><i class="fa fa-music"></i></button>
    <?php } ?>
    <?php } ?>

    <?php if ($question->question) { ?>
    <div>Question: <?php echo $question->question; ?></div>
    <?php } ?>
    <?php if ($question->answerA) { ?>
    <div><input name="answer" type="radio" value="A"/>A: <?php echo $question->answerA; ?></div>
    <?php } ?>
    <?php if ($question->answerB) { ?>
    <div><input name="answer" type="radio" value="B"/>B: <?php echo $question->answerB; ?></div>
    <?php } ?>
    <?php if ($question->answerC) { ?>
    <div><input name="answer" type="radio" value="C"/>C: <?php echo $question->answerC; ?></div>
    <?php } ?>
    <?php if ($question->answerD) { ?>
    <div><input name="answer" type="radio" value="D"/>D: <?php echo $question->answerD; ?></div>
    <?php } ?>
</div>